Sensor node (gating node)
Hypothesis A type assignment is a prediction until it is measured. Style sheet §1.2 bars presenting a prediction as a finding.
Source: Style sheet v22 §1.2
Definition (canon)
Graded, saturating transfer function. Fails by loss of responsiveness — gain → 0.
On record (as assignments, not measurements): Akt (Substrate §3); the monitoring-and-sanction apparatus (Legibility §6).
The loop requirement binds on the sensor node and on the sensor phase of a dual node, and nowhere else.
In plain words
A node that answers in proportion until it hits a ceiling. When it fails, it does not snap. It goes quiet.
It is not
- A node that "fails by folding" for any reason. A sensor node failing condition (i) or (ii) does not fold. It queues. Sensor node, queueing is a state, not a type.
- A mechanical node. See mechanical node.
What would defeat it
- Canon, standing rule (§1.2). Typing is reported as a measured property: the response shape near the operating point. A claimed sensor typing with no measured transfer curve is not reported as established.
- Follows from the definition. A node typed sensor whose measured transfer curve is stiff and near-linear to a hard limit.